Stackable base for mattress assembly



FIG. 1 is a top perspective view of the base;

FIG. 2 is a bottom perspective view of the base of FIG. 1;

FIG. 3 is a top view of the base of FIG. 1;

FIG. 4 is a front view of the base of FIG. 1, and a rear view isidentical thereto;

FIG. 5 is a left side view of the base of FIG. 1, and a right side viewis identical thereto; and,

FIG. 6 is a bottom view of the base of FIG. 1.

Broken lines in FIGS. 1-4 and 6 are for illustrative purposes only anddo not form part of the claimed design.

CLAIM The ornamental design for stackable base for mattress assembly, asshown and described.